Oil pump for popcorn machines



Nov. 5, 1940. v G|RERD 2,220,645

OIL PUMP FOR POPCORN MACHINES File (1 0st. 13, 1939 2 Sheets-Sheet 1Inventor VICTOR E. GlRERD,

v. E. GIRERD 2,220,645

OIL PUMP FOR POPCORN MACHINES Filed Oct. 13, 1939 2 Sheets-Sheet 2 Aiiorneys Patented Nov. 5, 1940 i UNITED "STATES PATENT OFFICE OIL PUMPFOR rorcoim MACHINE S Victor E. Girerd, De WittgArk. Application October13, 1939, Serial No. 299,368

machine and which when so mounted serves admirably the purpose stated.

The invention together with its objects and advantages will be bestunderstood from a study of the following description taken in connectionwith the accompanying drawings wherein Figure 1 is an elevational viewshowing the pump, forming the subject matter of this invention, andillustrating the application of the same.

Figure 2 is a top plan view of the pump.

Figure 3 is a detail sectional view taken substantially on the line 3-3of Figure 1.

Figure 4 is a vertical sectional view taken sub stantially on the line44 of Figure 2.

Figures 5 and 6 are detail sectional views taken substantially on thelines 55 and 6& respectively of Fig. 4.

Referring more in detail to the drawings it will be seen that inaccordance with the present invention the pump comprises an elongated,cylindrical barrel 5 to the bottom end of which is threaded or otherwisesecured as at 6 a tube 1 on the lower end of which is a valve 8.

The valve 8 comprises a casing 9 into the top of which is threaded aplug l0 that has an axial opening therethrough, and the plug 10 in turnis threaded on the lower end of the tube I as shown.

Casing 9 is provided with an oil passage therethrough and intermediatethe ends of the passage with a valve seat II to accommodate a ball checkvalve [2.

At the lower end thereof the casing 9 is provided with upper and lowerseries of circumferentially spaced ports 13 through which the oil from acan or similar receptacle l4 passes into the valve.

For the ball check valve element l2 there is carried by the plug [0 atthe inner end of the plug a stop rod l5 as shown.

A plunger l6 has a working fit in the barrel 5 and is detachably securedas at H on one end of a plunger rod [8.

The aforementioned plunger 16 embodies a cup member [9- of leather orother flexible material, the flange or wall of which will flex readilyunder pressure so as to permit the passage of oil upwardly past theplunger [6 as the latter moves downwardly in the barrel 5, as and for apurpose hereinafter more fully stated.

For the top of the barrel 5 there is provided a cap 20 that threads onthe barrel 5 as shown and interposed between the ends of the barrel 5andthe internal shoulder 2| of the cap 20 is a washer or packing 22.

The cap 20 has tapped into the periphery thereof one end of an elongatedspout 23 that may be of any suitable shape and design but preferably isof the shape and design illustrated. The crown of the cap 20 isapertured to accommodate the plunger rod 18 and has also formed integraltherewith a threaded pin 24.

For threaded engagement on the pin 24 and for cooperation with the cap20 for securing the pump on the popcorn machine there is provided a nut25.

As shown in Fig. 4 some desirable portion of V the popcorn machine isapertured to accommodate the stem or pin 24, and in Fig. 4 there isillustrated fragmentarily a portion 26 of a conventional popcornmachine, which portion as shown is apertured to accommodate the stem orpin 24 so that when the lock nut 25 is threaded home on the stem againstthe part 26 of the popcornmachine the pump will be securely held inposition thereon.

The nut 25 is provided with a cylindrical formation 21 that serves as acatch-basin for catching any oil which might be drawn upwardly andthrough the stem 24 during the operation of the pump, thus preventingsuch oil from flowing over the machine 26.

The plunger rod I8 also works through a gland nut 28 threaded on thestem 24 and accommodated within the catch-basin 21.

Also threaded on the upper end of the plunger rod I8 is a knob 29. Knob29 is provided with an integral lug or extension 30 that complements alug or extension 31 on the gland nut 28 so that by turning the rod I8 inthe proper direction lug 30 will engage lug 3! for threading the glandnut '28'on the stem 24 or for unscrewing said gland nut, as may be founddesirable.

Also to prevent the cup E9 of the plunger l6 being drawn up into the cap20 and to otherwise protect the cup l9 from damage there is provided onthe rod l8 a coil spring 32 disposed above the plunger I6 and soarranged as to strike the crown of the cap 20 when the plunger is at thelimit of the upstroke thereof.

In actual practice with the pump mounted on the machine as described andillustrated the valve-equipped end of the pump may be readily placedWithin the can or other receptacle I4 containing the popping oil.Obviously to draw the desired amount of oil from the can l4 and feedsuch oil to the proper receptacle of the popping machine, the operator,grasping the knob 29, reciprocates the plunger rod Id and plunger I6carried thereby. Manifestly on the upstroke of the plunger suction onthe ball valve I2 will cause the latter to unseat and oil from thereceptacle M will be drawn into the valve 8, past the valve l2 andthrough the tube 1 to the pump barrel 5.

On the down or return stroke of the plunger [6 valve l2 will seat andthe oil thus drawn into the pump will pass upwardly around the cup IQ ofthe plunger It so that on the next upward stroke 1 of the plunger theoil in the barrel above the plunger will be forced outwardly through thedischarge nozzle 23 into the pan or other receptacle provided forreceiving the oil so pumped from the can 14.

Thus it will be seen that the oil may be transferred from its containerto the receptacle of the popcorn machine provided to receive such oilwithout a great deal of eifort on the part of the operator and in a moreefificient manner than would result from the mere pouring of the oilfrom its can or receptacle into the oil-receiving receptacle of thepopcorn machine. These and numerous other advantages of the inventionwill readily present themselves to those skilled in the art.

In view .of the above'it is thought that a clear understanding of theconstruction, utility, operation and advantages of the invention will be.had without a more detailed description.

Having thus described the invention what is claimed as new is:

1. In combination with a fixed part of a popcorn machine, a pump forpumping popping oil, said pump including a barrel equipped at one endwith a stem extending through an opening in said part of the popcornmachine, a lock nut threadedly engaging said stem and cooperable withsaid end of the barrel for securing the pump fixedly on said part of thepopcorn machine, said stem having an axial bore therethrough and saidpumpincluding a plunger rod working through said stem; said lock nuthaving a catch-basin thereon to receive fluid as may pass with theplunger rod outwardly of the pump through the bore in said stem, a glandnut threaded on said stem within the confines of said catch-basin, aknob on the free end of said plunger rod, and said knob and gland nutbeing complementarily lformed ,for transmitting rotative movement ofsaid plunger rod and knob to said gland nut for efiecting either athreading home or unscrewing of said gland nut relative to said stem,optionally.

2. In a pump of the character described, a barrel, said barrel beingequipped at one end thereof with a stem for use in securing the barrelto a support, a lock nut threadedly engaged with said stem andcoo-perable with said end of the barrel for securing the latter to suchsupport, said stem having an axial bore therethrough, a pump plunger rodworking through the bore of said stem, a gland nut threadedly engagedwith said stem, a knob on one end of said plunger rod,

' and said knob and gland nut having inter-engaging means thereoncooperable for transmitting rotative movement of the plunger rod andknob VICTOR E. GIRERD.

